Car-ventilator.



E. DAY.

GAR VENTILATOR.

APPLIGATION FILED MAR.18, 1911.

Patented Nov. 21, 1911.

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GAR VENTILATOR.

APPLICATION FILED 111111.18, 1911.

1,009,135, Patented N0v.21, 1911.

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EDWARD DAY, OF CLEVELAND, OHIO.

GARVENTILATOR.

To all whom "it may concern:

Be it known that I, EDWARD DAY, citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in ;-CarVentilators, of which the following is a specification.

This invent-ion relates to street car ventilators, of the type having injecting and ej ecting passages, and the object of the invention is to provide an improved ventilator .which will operate by reason of the motion or travel of the car, to exhaust the foul air and supply fresh air, the operation being reversible according to the direction of travel of the car, by opening or closing dampers controlling the ducts or passages.

The invention is illustrated in the accompanying drawings in which Figure 1 is a perspective View of the ventilator removed from the car, an inner wire screen being removed. Fig. 2 is an elevation of part of the inside of a car showing the ventilator. Fig. 3 is a section on the line 3-3 and Fig. 41 is a section on the line 4-4 of Fig. 1.

The ventilator comprises a box or casing set in the deck or transom space at the top of the car, where the ordinary ventilating windows are placed. This box consists of top and bottom pieces 15 and 16, an outer wall or piece 7, and an intermediate plate or piece 8, the latter extending horizontally and equidistant from the top and bottom. The partition 8 forms upper and lower compartments. In the upper compartment are a series of inclined vertical partitions 6 which extend from the inner face of the box partly across the same, forming inclined passages or ducts which communicate with a longitudinal passage 20 which .extends from one end of the box to the other along the outer wall thereof. The passage 20 is controlled by a damper 10 which may be opened or closed by means of a crank 14 and any suitable connection accessible at the inside of the car. The lower half of the box has similar inclined partitions l3, inclined however in the opposite direction and forming passages which communicate with a longitudinal passage 20 which is controlled by a damper 10 operated in the manner simllar to that above described, the damper 10 being at the opposite end of the box to the damper 10. The ox is set in a car so that the side wall of the deck or transom will be on a line with Specification of Letters Patent. Application filed March 18, 1911.

Patented Nov. 21, 1911. Serial No. 615,327.

the inner edge of the passages 20 and 20 as indicated in dotted lines at 40, in other words so that said passages will be opened for the inlet or outlet of air, outside of the car.

A screen 9 covers the open side of the box, within the car, and a screen 11 covers two of the ducts in each compartment, being open at the remaining duct to permit manipulation of the dampers. These screens exclude dust and dirt.

In the operation of the ventilator, when the car is traveling in the direction of the arrow A the upper damper 10 is closed and the lower damper 10 is opened. The flow of air through the passage 20 incident to the motion of the car causes a suction or ejection of air through the passages in the lower compartment, which draws off the foul air from the car. Fresh air enters through the passages in the upper compartment, but ex cessive draft is prevented by the closed damper 10, sufficient air entering around the damper and through the rear end of the passage 20 to provide the necessary supply of fresh air. When the car travels in the direction of the arrow D a similar action takes place, but in reverse direction. That is, the lower damper 10 is closed and the upper damper is opened. The flow of air through the passage 20 then creates an exhaust through the upper passages and fresh air flows in through the lower passages.

The ventilator may be made of wood, metal or other material, and is capable of application to both new and old cars, one or more of the ventilators being set in spaces ordinarily occupied by the ventilating tran some of the common car decks.

What I claim as new, and desire to secure by Letters Patent is 1. A car ventilator comprising a box having upper and lower oppositely inclined passages therein, longitudinal through passages communicating with the outer ends of said passages respectively, and dampers in said longitudinal passages.

2. A car ventilator comprising a box open at its inner side, a horizontal partition dividing the box into upper and lower parts, oppositely inclined partitions in the respective parts, forming passages which open through the inner side of the box, the ends of said inclined partitions being spaced from the outer wall of the box, forming upper and lower longitudinal passages adjacent said outer wall, and dampers respectively at opposite ends of said longitudinal passages.

3. A car ventilator comprising a box having upper and lower longitudinal passages at the outer side of the box, said passages being open at both ends, a damper at the inlet end of each passage, and inclined passages leading inwardly from each of said longitudinal passages, and inclined respectively in opposite directions.

4. A car ventilator comprising a box having upper and lower passages 20 and 20 open at both ends and extending lengthwise through the box at the outer side thereof, a horizontal partition 8 in the box, inclined vertical partitions 6 between said horizontal partition and the top of the box, forming passages communicating with the passage 20, oppositely inclined partitions 13 between the horizontal partition and the bottom of the box, forming passages communicating with the passage 20*, and dampers 10 and 10 at the inlet ends of the passages 20 and 20 respectively.

In testimony whereof, I do aflix my signature in presence of two witnesses.

EDWARD DAY. Witnesses:

MARX M. HELLER, JOHN A. BOMMHARDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

